Developer environments

For developers in the Met Office, there is an existing developer environment and module that can be used. This environment is kept up to date for the current state of main.

For external developers, an environment can be created following the ANTS installation instructions.

If a change in the environment is needed, the environment.yml file in the branch should be updated and a new environment created from the changed environment.yml file. From this environment, a lock file should be created via:

conda list --explicit > environment.lock

and then committed to the branch. This process ensures that the MIAO team can replicate the environment for a central deployment.

If you see different behaviour between the running tests in rose stem and your normal environment, it’s likely that you have some packages installed in your user site-packages directory. These are isolated depending on python version, but not isolated to a particular conda environment. The rose stem workflow uses ants-launch to ignore these user installed packages.